Got to 20, did a dungeon with some guild mates from a guild I just joined (nice small guild with few players and no hardcore raiders...yet).
Dungeon was a tank and spank affair but to be fair the one guildie was level 31, and it is a level 20 dungeon so it was more a tour for me and the other member (level 20 slayer I think... or Beserker).
Healing as a Mystic is a bit odd, have a pet who can heal for 7 secs, or a 2 target direct heal but you have to manually mouse over the 2 targets ... can be a bit hairy when a huge boss is tossing players about the place.... oh and failing all that, a Mystic can conjure up a ball that others can 'eat' to heal up.
I didnt like the rushed tour though, didnt get to see much or even understand the dungeon... just running after the arse of the warrior as she went from mob to mob.
The mob AI surprised me a bit in the open world , saw hyena mobs attacking moose like mobs, and when I jumped in as I need both mobs... the both sets of mobs turned on me suddenly. The AI isnt a typical see enemy attack, some jump back... others circle around , some just charge in , some use their 'super' attack right off the bat (easy to avoid, move is heavily telegraphed at my level).
Now I get to experiment with the glyph system, and managed to enchant a few of my equipment... odd system but at least if a enchant fails it doesnt drop levels you just lose the materials used... today I think I'll mess with the glyphs , sort out my crafting... bloody expensive, my first attempt to craft left me without to afford to use the flight system to my next hub, its lucky a quest in the previous hub had a teleport as a reward.
Sometimes keeping an eye on your stats is not a good thing
Some things are painfully obvious, others must be made obvious... painfully